Machine for grinding balls.



A. E. GREENE. Mmmm; FOR GRINDING BALLS. AYPLIOATION FILED TBB. 20, 1911.

Patented May 14, 1912.

s Sandia-annu 1.

1N VEA/TOR'.

WITN

A TT ORNE YS.

A. E. GREENE. MACHINE EUR GRNDXNG BALLS. APPLICATION FILED 118.20, 1911.

Patanted May 14, 1912.

6 SHEBTSSBEET 2.

NN A@ QN .nur

@u 1 j l@VENTO/1.

Aim

BY v" A TTORNEYS.

A. E. GREENE. MAGHINE PoR mummia BALLS.

APPLICATION FILED FEILZO, 1911.

Patented May 14, 1912.

6 SHEETS-SHEET 3.

/NVENTo/e. 7e gm,

A TTRNEYS WITNESSES.-

. GREENE. MACHNE FR GRNING BALLS, APPLICATION FILED rEB.20,1911.

Patented May 14, 1912.

6 SHEETS-SHEET 4.

LVVENTOA. Mig QAM,

A TTORN: YS.

A. E. GREENE.

MACHNB FR GRNDNG ALLS,

YPLICATON FILED FE`BU,1S1. 1,026,350. 'rfaren May 14, i912.

, l I SHEETSWSHEBY :al f3@ ,/f-f/ 5f f8 /27 u A. E. GREENE.

MACHINE FOB. GBINDING BALLS.

APPLIonIoN FILED manzo, 1911.

Patented May 14, 1912.

UNITED STATES AUGUSTINE E. GREENE, DF HARTFORD. CONNECTICUT.

MACHINE FOR GRINDING BALLS.

Specification of Letters Patent,

Patented May 14. 1912.

Application filed February 20. '911. Serial No. 609,5@

To all i/:iom it may emiro/'11:

Be it known that 1. Ai'oifs'rmn E. Gann): e.

a eitizen of the United Statee of Ameriea. requling at Hartford. in the eounty of Harti orrl and State of (lonneetieut.haw invented a new :intl uset'ul Machine 'for (lrinilingr Balls7 ol which the following is a eneeilieation.

My invention relate@` to improvement@ in i machines for niaiuil'aeturinel balls of various kinds or out of Various materials and reaiiles in nauhaniaan,which. broadly and gen orally considered, is capable of imparting` a varying eonieal rotation to a ball while in Contact with a reroluble grinding or polishing wheel, the rotatior of Snell ball being` around a eonstant or nneliangfingr though imaginar)Y point which iq in line with the aXiS of Said wheel` in pai'tiali)Y rotating or turning saitl ball indepentlentlr to bringr the so-ealletl opposite siile of the saine into position for grinding or polieliina. and in `grinding or polishing this` .aille in the Finne manner as in the first instanre. tbe motion imparted to the ball during the aforesaid grindingr or polishingg operatioin being mieli that the time ol` eontaet between the ball and the wheel at an)y given point ot' eontaet on the ball is approximately the saine a,

suoli time of contact at any other riveli point ot' contact on the halls. The aforeaaiil mechanism in its broad aspeet posseefwe the above-mentioned Capabilities anil consist` ot' certain peculiar meehanieal and automatit` means for holding, inaninilating and releasn ing the ball, for eontrolliiufy and regulating the grinding or polishing: wheel, and for conveying or feeding the b1ill--all as hereina tter set forth.

One of the most importa it features of the aforesaid mechanism resiiles in the nieanf; whereby the member, at the end ol' which ie held the ball While being subjected to the grinding or polishinglr wheel, hereinafter uSually termed the ab ading ineniber or abrader` has imparted to its axisI of rotation a varying conical rotation, varying beeauae the angle of inclination ot Snell axis to the non-oscillatory axie about which said tiret mentioned axis revolves; changeable. This feature is important for the obvious reason that provision is thus inatle for abratling the ball evenly and uniformly7 and so produclng a true* sphere.

The obJect of my invention s to produce lin an eeononieal and expeditions; nninner i bath n'hirii are uniform in fait/le. Shape alifl Lini li, being perteetljr S-plifrif'al. anil thisl Without iniiairing. iniuring.miliangingl tire propertiw or inherent eliaraeterities or tiiialitieQ of thel nnitrriil troni whirl: tbe Walls` are matie. 'wliieli material :nur be ol' `an;7 Suitable Character.

A further objeet is to proilure an auto niatie machine and one that'` need hat little attention for abraeiing4 and, tiniehing balle7 iirning4 them out in the forni of true spheres. whiuli matzhine hasl a high velocit;y and is capable of aceoinpliliing a very la Vamount of Work in a given time, asa elan pareil to other hall-making machines. 'weizee and holds a ball moet rigidly or Securely duringv the abratling operations. releamxr it lirst partially anfl then wholly a the operation nl the machine eontinues,is adapted to take the ball or any number of the `Milne throueh the machine man;v tintes may be ileemeil nteiw'arjf. anojn which the work ia iisible throughout, the entire operation. With this nuit-bine. nniremer, the profetire between the ball and the abrailintr ri'heel van be eaeil); rry` -in to nieet clit Yferent grinding awt polishing eonlitiionfl o1' retinirenients.

(liber important objects :nifl stili-.nungen will appear in the eourse ot' the following ileszriptifili. A

l ani enablwi tf: attain the objeet's and se `ure the advantage nti my invention by the iueebanimi illustrated in the` awoiiip-anyiiig drawings. in whit-lr w lfigure i is a top plan of a praetival ein-- mitinient ot in): maf'hine: liig'. 1i. an enlarged :fide elevation of one of the magnetie elinflts ano' aeweiaetl pari a portion of the tli'iiln alii/sli earries thi-:r nienil, apnearing` in rwton; his. 2i, a earriilar ri-w to the preeiili'xgr. 1i--` xiii rituel; :intl aietl parta appear ,troni aim-re; Vig. le. a korte "al Section laken on line liu-hing in Alle direction of the asnoeiatetl arrow. in Fig, 2: Fig. I). a trant elmaien of aiii inaixliine: Fig, t3, :i iul't hangt eiil elevation of ille :winni: Fig i'. a lf-tail. in toi; pian. of tht' liin t. a iight bottoni laillewlinjj lei img liaiul elevation ot the niar'liine: l"`i;,;z` il, a liasni'rani illuetratiw oif the aetion of the ball-holding nieelianiain; Fig. {(L im en larged top plan of* the eluteli wliieh controls the drum at the head of the naiehine; F ig.

brfnkun wm. mld i hun mi wi c'nzyie anni disk nulla @vraie 1:, whm.. owing tu wf mi@ climi; Engr: und

'i iti-lieti iuitiun nu in i li more itttiiimtvt' www:

li' with me other itl there q :tre tutti' pitittlfw l'L. er --imntietiri ftrtunieti :it eqiiul :lietuin'es troni. the lounitutliniil renter of the truth :unl nt equal itiwitfintfe from @rieti other. :intl have eeiiu'eil iiw'u i un -i'itr rimini t! wi? nimh ni'ir'trtixili.' involving: wir l'. lti'iiit lmnlilml :it im` intim' terminal protetti futile, :waff

nimmt in! .Uit tot efwh min -l mounted i." :i rit tl :it the vint f tip-feite iirtiftet'l to the engin-writing' )olie irri there .mtl these anni@ are iiiroeil :it rei; teiiminils utf the ziusoeitieii Volte il tl i; the urne m' liremrsht oi' the, i nim.

ai' the pivote 5r'. :ire ot: insulliiieiit Arcug'tli nit rig-lilitj: to prevent the eonntwtetl chut-li, f

:nu porting spindle. et

itl @leere mit im nl.'

-soutitui'eh the actual luthier for the hiillfl.

litten sin? einheit is ot' the eli-:1trommgnetir with, the euri; or lxoliter 59 manie mit' @oft iriz-n that ont;v the minimum amount of ri\itlmil innggnetiwn will he retained by it'. 'the exposed enit ot' this-5 core er holder is eiippetl ur hollou'etl to lit the halls and forni i: goed and sntcient contat/rt or inflection .hner lieieinitt'tei eXtiLzine-:l un itllei l i'oixiileit lili' ynhl lit-tt. vanish itller Ying' titi i luzuifui i. l

wluoriws mounted onf frein turning en the i @il i there-with. The rolt ."0 in elim use i so i i lil thu!" the "ontiieting munleere lli i wn neri-r ,eliftiou its .epintlle lil fur enough tif-.mint the filoni E) to allow the axis ot tle viitirfl rituel; .itl to tointiile with the axis util eg'iiuflle. unil. "e .will ihut'l swings' :tu 1min. repreeentetl l the :ingle ot iurlinixtion of the r4l\ iixir hunne :u: the prirt revolve with `l -v5 infllt', hefuuee `:titl sleeve is then re viiuwiiuite-:l l' v rwwon of the eontm-t between .tinni 'JT intl nhl roll, unil through the iuetlilitn ott the eouiieet'ing Hike. 54. Thus the mint ot' iutiiirwvtion between the spindle it, u nifl: le the print'iiml or tintin exis cori'eqiwnliun ith thil line L) in Vig. il. unil the j ,eeroiuluj' un# or thtl axis upon which the lieti-hilt, ofi-illzitt. reprvuentttl h x' the pivote` Je.. heroine` the point :xhout iintl upon which the revolution :intl the oscillation ot' the ehuel; tithe plane. unil is the Center of' the l et-l'ert hiill, it living understood that the li tzint'e t'roin `-uih point to the renter of the holtler :75l is equal to one-hull' the iliainieter ot' u1-h lmll. y[he axis ol' thfs cliutk repre- .eviitfl tu; the lines fl :intl the eennr'jtinf or tengituiliuiil nxi ot' the yoke 5l hy the lines in Fig. it. in live (lillerent possible po5itime given them tu.' the Cum acting :Ignint f iti- 'll :mit nur. ing' the fiiljiifent enti of Suid A init uloniV the spintlle axis. By thisy uawuw :nell ii ki'1ninniier :i bull. :i5 l. in the u et the motion ot' which mention L nf. umiliiu thtA early part of thil sperilieiition. le it'iiiiu iluA 'mill firmly :intl seeit'rely i iu mij' holtlvr .t. 'im' tei-tro-unignetisut or action is einiilo \.e- 'l iil here explain the interim t'oi :iiililying the turnier. leaving the fr-pluuzttion ot the menus for utilizing the lutter until luier. j 'the ylruui il ie pre-i'iilefl with :i romnntt tutti tt) t'i t' with ehuvlt itt? hen ot. the elett ti';iiiigiie}r type. um! ii lmusli til is lirot \i-;letl t'or ein'h eotmnutnter, such hruh de pending: from un iubulnting bracket G2 l iuuuuteil on the inner rap 8 und extending to it the right over the uonnnututors. Srrews 63 im. the

, :tre lu'mitleit for the adjustment 0f the brushes (il. :mit hindingposts (54, as usual. Vt'ire. UT;- lead from the binding-pests Gl t0 :i suitable suurt'e of eltritrieiil energy, inilinl 'l'l tu: Fig. i. unil u wire 67 leads l from bueh uw e to zt non-insulated bindingi posit on the outer rap 8. Erich commutftte: is connected, in the customary manner, bj' ii 'wire it) with .'i binding-post 70 set in l nu inxulaitetl hrfielet 7l of insulating' matel rial attached to Ythe tlztun adjacent to one j t the @,:pinillef: 43, and a short wire 72 conlneets Snel'r `lointling-post with a brush T3. l Each bru5n 73 is adjustahly helil in one of l the brackets 'Il'by a, screw 74.

Secured to .esich spindle 43, with a ring 75 of insulating material between, is a contact ring `76 against which me of the brushes 73 bem-S. ii wire 7l letu'ls from each eonl the energy be eut 0H' from Siiifl ehuek after ttletr rin;i Tt to :i hinilingint T8 :it the inner i' enil ot one of the :mm or lirtineh4 oi the .Volw l 4u'hirh :it the inner terminnl of o the fiiimlle -fll upon which sut-h ring iinonuteil. zii l wire imaging troni .will ringA through rznlinl oneningw in the :wsoeiuteil iu nl;ii.inff ring T5 :rml spindle to :i Central lengitiuliiml iuiwlfugewsiy Til in Quill Spindle,

l@ im shown in YFig'. it. thence tlu'ourl'i sueh pnsmgeiiuy to yQuill yoke. out through a suit- :ilile opening therein. :intl :along the outside ot the yoke orni whirh Lunipol-ts ezlitl hiiulin'post to the luttri'` is liest shown in Fig'.

Il. the aforesaid oiiening in the yoke hein;T

represented by letterl llne :it SO. wire lll :i liii'ilingqiost SL) on the ehuel( 5C in this emnbiimtion. :.inll the (zii-enit to the trunie iS ronipletetl through :i short wire S3 which eoiineeiQ two liiiulingf-poshl and 83 also ou sziitl ehuelt. lult the biiulinpnst S5 beinnl noirinrulziletl. 'The libidine-posh; S2 :intl Sl :ire the ii-rniinnl.- oi the electromagnet Vwhit-h foi-iny zi part of the ehuel; 56 in this instaure. 'l`hu, the eireuit from the souree ol energy :it Gt, to :in v ehuek 'it antl bueh to :meh ouree formell by the proper wire 53. liru--h (ll unil roinniutator GO, :intl

the wireu f'ill :nul Trrlirush T55. ring:y To. unil the wires 7T, @l :intl S3 in the eoinhinntion, the ironie ot the machine. :intl the wire G7. The arrangement of the eonnnutzitors G() mul the timing of the flruni D are .weh thzibefietrvr chunkV i6 or its holtler 59 is nnigne ietl and cleninginetizetl {oli-1' iw-ffii'. every revolution ---otsoifl rlrinnfhut ill of suitl hohlers are not miiejnetiiml :intl tlenuiglfnetized together. lWhen any holder 5S) is umgnetizecl it- 10 trzietS to it.-;eli und liolilo serureljy' :my hull that iw l1 goed subject for nnikgnetie attrae-- tion wien lnoug'lit into the tieltl of such liltruetlon einunutinn' troni suifli holtler. uml rele-slee` will lizill upon being tleinagnetizeil. For :he purpose et imparting the neeei Sary inileiieiulein rolling' motion to the ball when it penses from one ifilirmler to the other. :w yet to be. more l'iuly 'pluinrih So thanV the unuluzifleil portion or gifle will he pimenir'l to the Feeoiul ulirz'uler, a piece of felt er other .suitable material to forni n frietion member 100 is :ittzuhed to the righthontl 'thee of the t=inilsirtl lil neuitlie to'p. The trie-tion ineinlfer l0() oeiiupies :i position so ihnt the renter of its exposed fue@ zipltiriminiaitely coincides with the tol) ofthe vertical tlifinieter ot' the eirele described by the left-hand enil et the horizontal tlian'ieter.

ot a bull held by any one of the chucks 56; 60 but enerouehes noniewhzit on the it hns brought Said ball into rulibing Contact with will `friction member, the lutter will ini- ]nirt :i rolling motion to nid hull. This is exactly what 'is llone in przurtiee. und, since the bull is hehl so tightly by the friction member in the euppetl end of the oiler'zuing holiler S9 that sind hall cannot ret out ol suitl holder, the ball rollS or is rolled in the holder, :intl when it has been turner] halt' i over or half irai around therein the ehueh :muy 'l'roni siiiil member 100.

short f ronneeh` the luiulinposl 7S with i@ energized anni. :nul Curries the ball with4 onty further independent motion olli1 of unil AVthough the chuck tlees not salop rotating while the bnll is being Carried past the member 100, the motion ot` the chuck in no wise interferes with the rolling over of the. ball, but `rather faeilitfites Such notion.

lussing on lo the :ibmiler-operating mechanism. which inelinlesr the Carriage 1l, it will be observed that Sue-h carriage is reeiprocateil by melius ot a earn RG Secured Aon the sli-:ift between the stnnrls lt). This aufn has a cum-groove 8l' therein to receive :in untrfrietion roll 8S mounted on gi, Sturt S9 set in the bottom of? the Carriage l1. The form or Shape of the eni'n-gi'tmve 8l iS such that at every revolution (it/the cani SG the Carriage, through the medium of the roll SS unil stud Sli, it' uuieed to travel from one end of itgr @ourse to the other nml blick again. "The other members ot the nbrmleroperating mechanism consist ol' two parallel spindles il@ arranged lo revolve Sitle by Bille in two pain of bearings 9i :intl under two nuire ot' mips 912 :it opposite ends of the earringe 1l nml oi the attzieherl :ind usoeizited elementiQ deseribenl below. ln this ease the ilpiurlle ll() (lo not reet (lireetly in the lefthainil hearings 91 and eaps 9:2, but in eollnrs 93- 93 whirl) :ire topped into Said bearings null cups The Spindle: Qt) :ire not only enpfible of revolving in their bearings, but they muy also be ireeiprocatetltherein. Said spindles extend beyond the left-hnnd bem'- inn'fa lll. nml the belt 40 passief; under the pulley 3i)` over thez=e extending portions of the spiutlles,.an l under the idler 41, so that the spindles :ire (lriien in the stime direetion 'at u. great speed by sai'tl belt und rotary members and hy the belt; 36 and the pulley T57. These pulley extensions, as they may be called, Shown nt J4-94, of the spindles 90, are of Suilieient length to permit of the required amoiint of longitudinal movement without the belt 40 running ott. Attaehed to the inner terminal of each Spintlle J0 is a head 95 which receives the stem ot' :i suitable holder 96 for an abrader 97, ii set-Screw 98 being employed in the customary manner to assist in Securing said stein in Said head and to utlord adjustment for said stem. The abraders 97 are made of any suitable grinding or polishing matrial. .A collar J0 in secured to each of the spindles 90 in position to bear against lthe cimtiguous right-baud bearing 91 and "cap 92 when urged toward them by a spring 101 interposed between auch collar and the conipanion collar .ll. The two collars 99 liniit the inward movement of the spindles llt) in- (lependently oi the carriage 1l, and the two springs tui retain said spindles in their innerimist independent positions' with a. force that may be increased or decreased by screwing the collars 93 in or out ac coitlingly. "Rhesprings 101 are sutlieientl)Y strong and stiff to hold the abratlers 9T to their Work, when the carriage 11 is in its 'advanced position. vet sneh springs afford yielding means yfor the spindles 90 whereby said abradere cannot be forced too hard against? th'e balls, might otherwise ha pen occasionally in the event the balls shou d he tot large. As previously noteththe pulley extensions 04 are long enough to enable the carriage 1l to malte its full travel in either directiini Without disconn'eeting the motive .poii'rr,.al:1ro, ofcourse, to permit of what- ,ever little independent movement there may bealongitudinally ou the part of the spindles 00.' The base et the carriage 11 is provided with two lateral tianges 10Q and these are arranged to Slide in guide-Ways on the tops of the stands l0, sueli gruirlewvays eonsisting in part of two pairs of removable plates 103n The cani-groove 87 shaped that aV dwell is produced at each end ofthe throw o the cam titl, so that. at each revolu tion of said cani, the carriage .11 actuated i'orvvard und backward and. held during parte ot auch revolution in both of its extreme positions. i

The abraders 9i' are' liollowetl in the centers ot their worlving faces to receive the balls, in :nach tl'lf saine manner as are the lioltlers 50, and when the abrailer holders titi are properly atljuetetl in the heads 05 and the millar-.a 90 are against the contiguous bearings ill and caps 92. the can; Sti as it revolves advances; the parts. until they eerters of the cupped portions of said abratlers coincide or approximately coincide with the circular path at the lefthand ends of the horizontal diameters of the finished balls carried by the chucks 56. In other worde, the point of interse.'-tion between the oscillatory axis of rotation and they main or principal axis around ,vlichsuch oscillatory axis revolves, ot :ny chuck in alnailing position is the Same distance from the center ot' the eoneavitv in a iiixtaposed plunder, that is. o? an abratler il the axle ot' which it' continued would roinritle with :Said n'iain or principal #vim :as it is from 'ille rent-er of the eoinzavit)v or' tite holder Af o" l cimeli.

The,mechanism tin' l? cling; @la con;` prises in gancio! tgwleah-al zipper anti lower f respectively, and an elevator 107. With these and other parts described below is furnished a receptacle 108 for the balls, such receptacle being located under the rear center of the frame 6 on a stand 109 which Sets on the floor. The bottom of the receptacle 108 on the inside is concave so that the balls in said receptacle gravitate toward the center of such bottom and toward a central opening 110 therein, which o ening is of a size to permit a single hall on y to pass through. Secured directly under the openingv 110, on a shaft 111 which is journaled in the legs ot the stand 100 and extends lengthwise ot the machine, is the feed-Wheel 104. This feed-Wheel has four pockets 112 arranged atI regular intervals in the periphery thereof and each large enough to receive a ball as it escapes through the opening 110 and convey the ball away from the receptacle. The raceway 10G is inclined and the higher end oi' the saine is situated adjacent to the front part of the feed-Wheel 104, while the lower end opens into the rear line of pockets which form the elevator 107, hence at even; a 'niet' revolution of said feed-wheeh assuming that one of the poele ets 112 is beneath the opening 110 at the start7 a ball drops into said pocket, it bein then the uppermost one. is carried forwar until in a position to roll out of such pocket, which it does and passes into said raceway, and then said ball rolls down said raceway and around into the elevator bucket which in pwition to receive it. In this conneCu tion :see more particularly Figs. 7 and 1Q.

The elevator 107 ia of the ordinaryy endless-belt variety and is carried on upper and loiver pulleys 1151 and 114, respectively; the former being secured on the shaft 25 and therefore driving the elevator, and the latter being secured on a shaft 115 journalei in two bearings llivhich rest on the `floor. The shat'till is parallel with the .shaft lll and drives the latter, as said shaft 115 is, revolved through the medium of the pulley llll and the elevator` b v means ol sprocket wheels 117-7--117 secured to the tvo shafts. and a sprocket-chain 11S courier-tin;f said Isprocket-ivheels. The elevator buckets1 are arranged so that those in the rear line are given a downward slant to the left as they travel upward. and a long plate or siding 111i is arranged against the lett-hand edge of said rear line of buckets to prevent the balls therein from rolling out until just before the top of the pulleyv 11?.' is reached.

'llore the siding llt) ends and the upper front' end ol' the racevvay 105 is situated, the latter being in front. ot' the upper end of lsaid siding; as best shown in Fig, l, and the balls rollin;r t'roin the elevator into said rin-cw as they pass clear or' the siding. The .Kling llt) rests at the bottom on the licor :tail is braced troni the traine (l at 120,

-quarter of its revolution, with the result that the first ball is dropped from thesnow demagnetized chuck into the receptacle 10S below, theseeond ball is carried to the sec.-

ond abra'ding position,` being turned half Way around on the way, and the third-ball, which the third .chuck has already picked, is brought 'to the first alirading position.

uWith the .coi'npletion'of the revolution of .-tlie drum, during the last quarter of which,

.i themsecond ball is dropped` the third ball is carried to thesecond abrading position and the fourth ball held b r the fourth ,chuck to the first abrading position, and the first chuck is again magnetized so that it can and does pick-the fifth ball,` one c vcle of the machine is `coiiip|etc, provided such cycle start with the picking of the first ball by the first chuck, in accordance with the foregoing description. During this c vcle the clutch actively operates at four regular intervals,'the carriage 1l advances and re# treats four times` and each' chuck is demagnetizcd twice` once when it passes the friction iuelnber 100, and once again when it drops the ball after the second ibrading.

Under the present arrangement, thel balls are run through the machine a number of times until they are. reduced to the exact. 'size desired or are finished or polished to the desired degree of nicety, but this 'procedure may not always be iiecessa ry.`

It may be well to notel in passing that the pivots 58 and the rolls 50 afford ample resistance to `the impact of the. abraders when advanced on the balls between them and the chuck holders 59, then there are the springs ltll to relieve'any excessive shock at these points, as well as to yield, when the abiaders encounter balls that are too large, and SQ allowing the abraders to stop short of their normal advanced positions.

Taking up, finally, the suction device or de'viees illustrated on the last two sheets of drawings, it will be seen that means for handling the balls with air take the place of elect romagnctie means for that purpose, and that the drum .9,.without the coinim|- tators, the driving mechanism for such drum, the spindles 43 with their yokcs, the spring-pressed cani sleeves 4G and the rolls therefor, and the holders .'39, of the other construction `are all retained and do not greatly differ, wherever they ditler at all,

luded to in the preceding paragraph, at-tention is fiist called to thev substitution of a Shaft 121 furthe stud 20, the narrowing of the intermediate gear 19thereon, and the presence of an additional intermediate gear A 12,2 secured to Said shaft, with said gear 19`y to mesh with the gear 18, Fig. 13; and'tlien to a flange or head 123 at the outer end of each spindle`43, an air passage 124 which, unlike the wire passageway 79 in the firstinstance, extends` the entire length of said spindle, branches at the yoke 45 which ferais a part of the spindle, and extends to the openings in` the arinsof such yoke a't the ends furthe pivots 58, and air passages 125--125 in said pivots. Each pair of pivots 58 is here prevented from turning by means of two bolts 126 tappedjnto the free ends of the supporting yoke 45' into engagemeutwitb said .pivots. Mounted onthe in. ner terminals of each pair of these pivots, in practically the same way as the electro-niag-`l iietic chucks are mounted, is an air 0r L* vacuum chuck 127 pivotally connected atjtj with two arms 128, these members being` arranged and adapted to operate mechanicallyjv in the same way as d0 the chucks titand th.,

yokes 54. Like the chucks a6, t-he"cli`ueks'- 12T have ballholdcrs 59, and there is a branching air passage 129. iii the head of each of said chucks 12T, which 'passage leads from the center of the chuck holder to the f penngs in the chuck arms 5T foi: the pivots 58. 'l`he passage 125 in each piifotrcoliaY iiecls with the branch of thejpassage P1242 which is in the supporting ifoke arm for such pivot, and also connects with the brunch if the passage )'29 which is in the* arm 57 that is mounted on said pivot, so that there is a clear air passageway from the left-hand open end of the holder of each air chuck, through said chuck and by way of the connecting pivots to and through the supporting yoke -t and the entire length of the supporting spindle 42. At the junctions of the passages 12'.l and 125 .such passages must be large enough, of course, to enable the air chucks to rock, when the mechanism is in operation, without. closing the same. The axis of each spindle 43, in the suction or vacuum mechanism, corresponds with the line 2, in Fig. t), and the chuck 12T :md arms 128 assume the same positions while revolving as those indicated by the lines 3 and 5, in said view.

` suitably supported by a bracket 130 from the outer cap 8 is a case 131 having an annular air or .suction chamber 132 therein, Figs. '13. lt, lV and li'. 'llie case 131 is suspended between the fears lf) and 122, and the shaft lll exitents through the center thereof. The inner wall of the case 131 is provided exteriorly with two annular? flanges uo and 1l4,. the former being smaller than the latter. he tlange 1514 is an extenchannel 135 through two arcuate slots 12h;

and 137 and a round opening 151.5 in thc-g wall between. A pipe 139 `leads from the chamber 1 32, at any convenient point, to a pump (not shown)l for exhausting the'air from said chamber.` A Two-radial ports 140 and 141 are made in the [lange 134 to establislrcommunication" with the channel 135 from the outside. A coupling ring' 1421its and is adapted to. revolve freely.in the channel 135, being secured in place on the open side of said channel by means of outer and inner rings 143 and 144l fastened to theedges of thegtlanges KS4-and. 1321, respectively. Thus said flanges forni a joui-ual 'for the coupling ring. lltpli-distant troniV each other in the coupling ning 142 are tout" recesses 145 formed in the lett-hand face' ot said ring, and th'ese recessed lportions are farther rccessmhir the center ot` each at 1411, to provide journals for the spindle heads 1'23, and slotted at 14T. the slots being concentric with -the slots 151V and 13T and the hole '13S and opening through the plain right-handsideot said ring and through the recessed side thereof. Each head 1Q?. is held in its recess 146 vby meal-isnt a pair ot abutting segmental plates .118 fastened in the'reeess 1-'1-5 provided for their rereption. The plates 148 have openings 1-111 in their abutting edges of a size to accommodate the necks of the spindles 43 or thel portions ot' such spindles that are between the heads 123 and the. parts of said spindles uponl which. the pinions 44 are mounted, but not large enougl'i for the passage of said heads. 'There are four radialports-'150, in the coupling ring, cach of which opens at its inner end into one-ot the slots 147 at one end of the same, and at the other end through the periphery of said ring. The ports 140, 141 and 15() are all in thc saine vertical plano in order to enable any one of thc latter to be brought iut'o alim-meut with either o1 the two former. v

(',lcarly from the abort: the drinn il in its rotation rarriesarith it tht` spindles 'l, as before, and vrotates the coupling ring 141! which is socurtdy attached to thtI outer terminals otsaid spindles by the platesl til-*1, such ring` traveling around in the channel 121.7, consequently each slot 147 is brought into open (-omnnlunication with thtl slots4 llt' and 137 and with the opening 13S, and ear-h port 15H is brought'itlto alim-ment with the poi-tsl t() and lill. Assuming that there. is apartial vacuum in the chamber 132. and that thtauat-hine is ruiming and the ring 142 has been turned so as to locate one of the vslots 147 in' open communication with the slot 137, air `is being sucked through into said chamber from'the holder 59 which is in communication through ,the connectingr passages withsaid Slot 147, or'the're is a suction at said holder, .and such suction has l abraded, This suction commences assoonas r the aforesaid slot 147 passes-into open relal tion' with the slot 137, and continues while which is the delivery station of the ballfeeding mechanismftakento the rst'abradnu,r positiomabraded on one side 'and passed on to the friction member 100, said drum and ringhaving meanwhile madetwoquarter turns and carried said slot 147 into open relation with the sl0t`136, sueh'elation being established before said slot 147 'leai'es'said slot 137. and finally taken to the slot 147 beyond said slot 13G, and brought the communicatingr port 150 into line with the port 140.

ports to break the vacuum, and the ball t` reed in' this manner is 'rolled over or given a half revolution as it is .carried "pastthe member 100 and before the slot 147 which is now being followed in its course, arrives at the opening 138. 'When said slot-does arrive at said opening, which is just astle ball is about to leave the member 100, -the vacuum is restahlished and said-ball is advanretl .to thesecond abrading position, abraded, and carried on to dischargingposition before said slot leaves said openiugf Very soon after connnnnication vwith the ncction is had with the port3141, as sh'own in Fig. 17, the vacuum is again broken, and the balll in consequence permitted to drop from its now powerless holder. By the time said holder is in position topick another ball, however, its associatedslot -147 will have once more come into open relationship with the slot 1517. 'lhe operation of the air or vacuum controlling parts and members is alike in the case of each vacnmuchuck. the same boing energized'twico and twice, rondt-red powerless by the breaking of the vacuum atreaeh complete revolution o1' the drum and coupling ring; and the'constant and intermittent, rotary and the constant, oscillatory motions of the parts, including the drum, spindles and chut-ks. are the same as has been fully'explained in connection with the electro-1|tagnetic chucks and assol riated parts. i

'l`he vacuum rhnclcs 127, as they appear in Fig. 113. while relatively in correct posilions` artA not as they would be if iu theJnarhiniand occupying corresponding posil tions, because tlul rast: lill is' sectioned (nl snflicient fot-eetohold a ball while being' a ball'is picked at the receiving position,

The suction is thus eut 011' and air admit-ted at the alining ports or through the alining.

chamber 132 is cut ott a second time, con- 'sitionsin the machine and xai'ball, while the fourth chuck,

`A'7"1irlilchiiiloes not appear in this view, would be j energized and in .the act' of carrying a ball 1-5 justjtaken at the receiving position to the Y y S Affirst.'v .brading position.

'.Tlie'E-suction mechanism, including the chucks,A is designed to handle balls ffivoodfivory, and other substances and ma- :1,1 20,:'teri'als which, unlike steel balls for example,

s'cannot'be handled successfully or at vall by the electro-magnetic chucks. My inventioncomprehends,- therefore, the grinding and polishing of balls of practically any descrip- -tio I have previously stated, and the Woiikqisdone with a `degree-of uniormty, Aac'itira and thoroughness and with. a ce- 5 lerit 'at have been unequaled herethfcre.

` at; claim as my inveution, and desire to ysecure-by Letters Patent, is--v 1. The combination, in a machine. for Aabrading spherical objects, with an abrader, of means Vto hold an object while in Contact with such labrader and at the same time iin-- parten orbital gyratory motion to said object on'its own center. v ,j 2. .The combination, vin a machine for labrading spherical 'objects with an abrader, of vmeans to hold an objc-ct while in contact with such abraderv and at the same time im- .pa'rt an orbital gyrator-y motion to said cbject on 'its own center and means'partially to rotate said object also on its own center lindependently of its holding means.

3. The combination, in a machine for abrading spherical objects, with abraders, of means to hold an object While in Contact with either of such abraders and at the same time impart a lgyratory motion to said ohject, means to carry said object from one of said ab'raders to the other, and means pari tially to rotate said object independently of its holding means during the. transfer `from one abrader to *he other.

et. The combination, in a machine Yfor abrading balls, with an ahradcr` ot an intermittently rotating member. a plurality of ball-holding chucks carried by such niember, and means to impart a g'yrfitury .notion to said chucks.

5. r1`he combination, in-a whimfur abradiug balls, with an abraf cif an iutermittently rotating znemlier, a plurality uit ball-holding chucks carried by said :nem-

these three chucks in the uppermost chuck would be.'

ber, means to impart motion to said chucks, and means partie y to'rotate balls while connected vwith said chucks independently of the latter.

6. The combination, abradin'gballs, with abraders, of an intermittently rotating member, a plurality 'of ball-holding chucks carried by said member` means to impart a gyratory inotion to sai chucks, and means partiall to rotate each ball connected with a chuc independently of the latter assaidintermittently rotating lmember operates with `said chuck totake said ball from one of said abraders tothe other.

7. In a machine for abrading spherical objects, an'intermittently rotating member,

a chuck lcarried by said member, means to energi-ze said chuck at predetermined intervals, and means partially to rotate anobject connected with said' chuck while the lat-ter is nonfcnegized.

8. In a machine for 'abrading spherical objects, nn intermittently rotating member, a chuck carried by said member, means 4 to energize saidA chuck at predetermined intervals, means to impart a. gyratory motion to said chuck, and means partially to rotate an object connected with said chuck .while the latter is non-energized.

9. Ball-holding means, for an abrading machine, comprising a revoluble, non-oscillatory spindle provided yvith an orbital oscillatory chuck.

10. Ball-holding mechanism, for an abrading machine, comprising 'a revoluble spindle provided with an orbital oscillatory chuck, and energizing and non-energizing means for such chuck.

il. Ball-holding m chanism, for abrading machine, corr'iiising a revoluble spindle provided with aI yoke, a collar slidingly mounted on such spindle, a chuck pivotally attached to said yoke, pivotal connections between said chuck and said collar, and means to reciprocate said collar.

l2. Ball -holdi'ng mechanism, for an al'irading machine, comprisn a revoluble ,spindle provided with a yoe, a springin a .machine for.I i

all

:tol

carried by such member, such spindles belng provided with oscillatory'chucks, and energizm and non-energizing means for -such. chuc 's.

l mechanism for an abrading machine, with a plurality of .constantly revolving spindles provided with oscillatory chucks, and .means to rotate intermittently said spindles about a common axis, of means to energize and non-energize each ofsaid chucks according to its position in the orbit around said common axis.

17. The combination, in ball-holding mechanism for an abrading machine, with a constantly revolvingr chuck, intermittent means 'to rotate Aaid chuck orbitally, and means to energize and non-energize said chuck accordin,f r to its position in the orbit which it describes` of a friction member in operative relation to a ball, connected with said chuck. to hold said ball to said chuck and 'partially rotate the ball during,r a period wbiie #be chuck is noirerergizcd.

1.5. The' combination.v in ball-holding` mechanism for an abradingu1u-bine. ith a constantly revolving.: and oscillating chuck.

intermittent :nouns to rotate said chuck o1'- bitally. and means lo energiz( and non-euergize said chuck according to its position in the orbit which il describes. ol' a friction member inoperative relation to a ball` connected with .said chuck. to hold said ball to .said el nek and partiallyy rotate the ball dur-v ing a period while the chuck is non-ener- It. 'l`lw combination. in :in abradinlgr machine for balls. with a chuck. and means to rerolvo .said chuck on its principal or main axis' and oscillatf` it orlrtally about said axis. oi' an alu-ader havin;r an axis extendingy iu the salue direction with ille aforesaid principal or inain clnielc xis. andmeans to aetuale said abradcr axially into and out ot the field of action ot' said chuck :ind the liall carried thereby.

2t). 'lhe combination. in an abradingI roaeliine tor balls. with a flinch'. and means to revolie said chuck on if.'e principal or main axis und oseillate it orliitall)Y about said axis. ot' an abraflel having an axis extending in tbe sanndirection` with the aforesaid principal or main chuck axis, and means to ac` tuate said 'buck wth a ball carried thereby bearing against said abutmcnt's, chucksv ball-holding' into the field of action of said abrader and out of such field. c

21. The'- combination, in an abrading machine for balls, with a chuck, and means to revolve said chuck on its principal or main axis and oscillate it orbitally about said axis, of an abrader having an axis extending in the `same direction with the aforesaid principal or main chuck axis, and means to actuate said chuck with a ball carried thereby and said abrader into and out of eacli others fields of action, said abrader being actuated axially.

22. The combination, in an abrading machine for balls, with a pair of abraders, means to ad rance and retract such abraders, and a friction member between the positions occupied by such abraders when ad vanced, of a chuck, and means to actuate such chuck with a ball from one of such .positions to the other, traversing said -friction member on the way.

23. The combination, in an abrading ma-v chine for balls, with a'ballh0lding chuck, means to impart an intermittent orbital movement to suehchuck, and means to revolve such ehuckonits principal or main axis and oscillate it orbitally about said axis, of an abrader having an axis extending in the same direction with said principal or main 'chuck axis, and means to impart an intermittent travel axially to saidabrader, such travel occurring while. said chuck is in line with the abrader a.xis.\g Q4. The combinizition` in an abrading machine for balls, of a plurality of ballhold ing' chucks intermittently rotatable about a common axis. a pair of abraders separat-'ed on centers by a distance equal to the separation on centers of two adjacent chucks, means to ston said chucks in therorbital movement with any pair in line with said abrarlers, and means to advancey and retract said abraders while said chucks are in a condition of orbital rest.

25. The combination. in an abrading machine l' or balls. of a plurality of constantly revolving and oscillating ball-holding chucks intermittently rotatable about a common axis, a pair of abi-aders separated on centers by a distance equal to the separation on centers of two adjacent chucks, means to stop said chucks in' their orbital motion with any pair in line with said abraders, and means to advance and retract said abraders while said chucks are in a condition of orbital rest.

im. The combination, in a machine for abrading balls, with ball-holding means, of a suitably mounted carriage, amember slidinarly supported by said carriage, yielding means to retain said member normally in a forward position relative to the carriage, an abrader carried byv said member, and means to reciprocate said carriage, to adholding means7 and to retract it from such ball.

2.8. The combination, in a machine for abrat'iing balls, with ball-holding` means, of a suitabl mounted carriage, a revoluble spindle shdingly supported by said carriage.y yielding means to retain said spindle normally in a t'orward position in the carriage, an abrader carried by said spindle, and means to reciprocate said carriage, to ad- Vance said abi-ader against a ball held by said ball-holding means, and to retract it from such ball.

29. The combination, in ay machine for abrading balls, with a baildtolding chuck rotatable in an orbit, of a ball-feed havingr a delivery station adjacent to said orbit at one side.

30. Tl'tty combination, in a machine for abi-sidingr balls, with a ball-holding chuck rotatable in an orbit, and means to energizeA and non-energize such chuck, of a ball-feed having a delivery station adjacent to said orbit at one side.

31. The combination, in a machine for ahrading balls, with a constantly revoluble ball-holding chuck intermittently rotatable in an orbit', and means to energize and nonenergize such chuck, ot a ball-*feed having a delivery station adjacent to'laid orbit.

fi. 'l'he combination. in a machine for abrading balls. with a plurality of ball-holding chucks l'nonnted for intermittent rota.- tion in an orbit. and a ballfeed having a delivery station adjacent to such orbit, of

energizing: lneans for such chucks while each is at such station. and non-energizing meandtor such chucks while each is at some point remote from such station.

2&3. 'l`he combination, in a abradint;r balls. with ball-holding means having an orbital motion, of a receptacle l'oiballs below such ball-holding means, an elevator having a delivery station adjacent to the orbit of said hall-holding means, an means to deliver balls from said receptacle to said elevator.

2'... 'l`he` combination, in a machine for abrading balls, with ballnholding means havin; r an orbital motion. et' a receptacle for balls, an elevator having a delivery Station adjacent to the orbit of said ball-holding means. and a revoluble feed membexvalranged to receive balls singly from said receptacle and deliver them to said elevator.

AUGUSTINE E. GREENE.

Vi t nesses F. A. Curran, A. C. FAmaANKs.

machine for dat 

